Washington (CNN) - Mitt Romney picked up two conservative endorsements Sunday to add to victories in three states last week heading into Super Tuesday, the biggest single day of the Republican presidential campaign.

With two days before contests in 10 states will decide how more than 400 delegates get allocated, Romney's three opponents all appeared on Sunday talk shows to outline how they can catch the front-running former Massachusetts governor as the primary season heats up.

(CNN) – Steve Bridges, an actor best known for impersonating then-President George W. Bush at the 2006 White House Correspondents’ Association Dinner, died last week at the age of 48, his manager said Sunday.

Bridges' portrayal of Bush was replayed around the world following the 2006 event, which was most notable because the real president was standing right next to Bridges on stage.FULL POST

Replete with high-energy inspirational sermons and gospel music, BET programming crescendoed into a half-hour special, catching up with the first lady while she's on tour promoting the second anniversary of her "Let's Move" health campaign.

(CNN) - With two days to go until Super Tuesday, it's all knotted up in Tennessee's Republican presidential primary, according to a new poll.

An American Research Group survey released Sunday indicates that 35% of likely GOP primary voters in the state are backing former Sen. Rick Santorum of Pennsylvania, with 31% supporting former Massachusetts Gov. Mitt Romney, 20% backing former House Speaker Newt Gingrich and 9% supporting Rep. Ron Paul of Texas. Santorum's four point advantage is within the poll's sampling error, which means it's basically all tied up.FULL POST

Washington (CNN) - When Republican Sen. Olympia Snowe of Maine rocked the political world with her announcement that she would not seek a fourth term in the Senate, she was forthright in expressing her frustration with "an atmosphere of polarization" in politics.

But for all her transparency, it was one of Snowe's Senate colleagues who perhaps best summed up her motivation for deciding to end her decades-long tenure on Capitol Hill.

Washington (CNN) - House Majority Leader Eric Cantor endorsed Mitt Romney as the Republican presidential nominee Sunday, and another key conservative, Oklahoma Sen. Tom Coburn, also announced he was backing the former Massachusetts governor.

Backing from the two conservative lawmakers is noteworthy because Romney is often painted by his rivals as too moderate. Both Coburn and Cantor represent states holding primaries on Tuesday.

Washington (CNN) - Preventing Iran from developing a nuclear weapon is a national security interest of both Israel and the United States, President Barack Obama said Sunday in calling for continued diplomatic efforts but also pledging that all options - including a military effort - remain viable.

"All elements of American power" remain an option to stop Iran from becoming a nuclear power, including "a military effort to be prepared for any contingency," Obama told the American Israel Public Affairs Committee (AIPAC), a pro-Israel lobby group.